 /*******************************************************************************
  * Copyright (c) 2000, 2006 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.ui.internal.dialogs;

 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.jface.viewers.TableViewer;
 import org.eclipse.jface.wizard.IWizardNode;
 import org.eclipse.jface.wizard.IWizardPage;
 import org.eclipse.jface.wizard.WizardSelectionPage;
 import org.eclipse.ui.IWorkbench;
 import org.eclipse.ui.activities.ITriggerPoint;
 import org.eclipse.ui.activities.WorkbenchActivityHelper;
 import org.eclipse.ui.internal.WorkbenchMessages;
 import org.eclipse.ui.model.AdaptableList;

 /**
  * Page for selecting a wizard from a group of available wizards.
  */
 public abstract class WorkbenchWizardSelectionPage extends WizardSelectionPage {

     // variables
 protected IWorkbench workbench;

     protected AdaptableList wizardElements;

     public TableViewer wizardSelectionViewer;

     protected IStructuredSelection currentResourceSelection;
     
     protected String triggerPointId;

     /**
      * Create an instance of this class
      */
     public WorkbenchWizardSelectionPage(String name, IWorkbench aWorkbench,
             IStructuredSelection currentSelection, AdaptableList elements,
             String triggerPointId) {
         super(name);
         this.wizardElements = elements;
         this.currentResourceSelection = currentSelection;
         this.workbench = aWorkbench;
         this.triggerPointId = triggerPointId;
         setTitle(WorkbenchMessages.Select);
     }

     /**
      * Answer the wizard object corresponding to the passed id, or null
      * if such an object could not be found
      *
      * @return WizardElement
      * @param searchId the id to search on
      */
     protected WorkbenchWizardElement findWizard(String searchId) {
         Object [] children = wizardElements.getChildren();
         for (int i = 0; i < children.length; ++i) {
             WorkbenchWizardElement currentWizard = (WorkbenchWizardElement) children[i];
             if (currentWizard.getId().equals(searchId)) {
                 return currentWizard;
             }
         }

         return null;
     }

     public IStructuredSelection getCurrentResourceSelection() {
         return currentResourceSelection;
     }

     public IWorkbench getWorkbench() {
         return this.workbench;
     }

     /**
      * Specify the passed wizard node as being selected, meaning that if
      * it's non-null then the wizard to be displayed when the user next
      * presses the Next button should be determined by asking the passed
      * node.
      *
      * @param node org.eclipse.jface.wizards.IWizardNode
      */
     public void selectWizardNode(IWizardNode node) {
         setSelectedNode(node);
     }

     /* (non-Javadoc)
      * @see org.eclipse.jface.wizard.IWizardPage#getNextPage()
      */
     public IWizardPage getNextPage() {
         ITriggerPoint triggerPoint = getWorkbench().getActivitySupport()
         .getTriggerPointManager().getTriggerPoint(triggerPointId);
         if (triggerPoint == null || WorkbenchActivityHelper.allowUseOf(triggerPoint, getSelectedNode())) {
             return super.getNextPage();
         }
         return null;
     }
 }

